Apparatus to control fluid flow through a tube



FIG. 1 is a front, top, and right side perspective view of the apparatus to control fluid flow through a tube, showing my new design;

FIG. 2 is a front side elevational view thereof;

FIG. 3 is a back side elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines in the drawings depict portions of the apparatus to control fluid flow through a tube that form no part of the claimed design. 

CLAIM The ornamental design for an apparatus to control fluid flow through a tube, as shown and described. 